Car-bolster.



Patented Dec. 9, 1902.

11x.` PANcoAsT.

CAR oLSTE.. (Application filed Aug. l?, 1901.)

` J7@ en? 153 YH: annals vanzn'sco'. Prfomuruo.. wnsnmaron. u cy Nrrnn STATES union.

ATEN'T ALBERT PANCOAST, OF DETROIT, MICHIGAN, ASSIGFOR TO AMERICAN OAR AND FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION YOFA NEW JERSEY.

GAR-BOLSTER.

SPECIFICATION forming part of Letters Patent No. '71 5,416, dated December 9, Y1902.

Application iiled August 17, 1901. Serial No. 72.335. (No model.)

To all whom, t Netty concern.-

Be it known that I, ALBERT PANcoAsT, a citizen of the United States, residing at Detroit, Michigan, have invented a certain new and useful Improvement in Gar-Bolsters, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the acio companying drawings, forming part ot' this specification, in whichl Figure l is a side elevational view of my improved bolster, one end thereof being shown in section. Fig. 2 is a plan view of the bolster, the left-handend being a top plan view and the right-hand end an inverted or bottom plan View. Fig. 3 is a vertical cross-sectional View on line 3 3 of Fig. l.

This invention relates to, a new and useful zo improvement in holsters designed especially for use in car construction, and while I have shown myimprovement embodied in the form of a tru eli-bolster it is obvious that with slight changes it could also be used to advantage as a body-bolster.

The objects of this present invention are to enable the use of a niachine-riveter in the assemblage of the principal members and also "to use commercially-rolled or structural steel 3o as said principal members, arranging them in such manner that a simple, strong, and cheap bolster is produced.

With these objects in view the invention consists in the construction,arrangement,and

combination of the several parts, all as will hereinafter be described and afterward pointed out in the claims.

In the drawings, l indicates the side webplates, which are preferably provided with 4o integral laterally-presented flanges 2 along their upper edges. These anges, as shown in Figs. l and 2, do not extend to the ends of the web-plates, but terminate within the lines of the truck column-guides.

3 indicates the top cover-plate, preferably coextensive in length With the flanges 2, to which it is riveted.

-i indicates the center-bearing, which is riveted in position, as usual. Side bearings (not 5o shown) are also provided.

5 indicates a rein forcing-bracket, preferably a malleable casting, provided with a vertical opening 6 for the reception of the king-pin. This bracket is riveted to the top plate (and also the center-bearing) and to the side plates.

7 indicates a channel whose iianges are presented downwardly and riveted to the lower edges of the side plates. y

8 indicates column-guides, preferably in the form of angles or castings, secured to the side 6o plates near the ends of the bolster.

It will be observed that the side plates have their lower edges at the ends of the bolster substantially parallel with their upper edges for a short distance and that the middle portion ot' the bols ter is considerably deeper than these end portions; also, that the channel 7 is bent to the shape of the lower edges of the side plates. By this construction the ends of the channelatfordspring-seatsforthe bolster-sup- 7o porting springs, (see Fig. 1,) and at the saine time said channel serves as a tension inemher, the inclined portions thereof lying inthe planes of the greatest strains.

The bolster as an entirety observes generally a hoX-girder forni of variable depth, the ends of the bolster being substantially U shaped, due to the termination of the coverplate at the column-guides, as shown in Fig.

l. This cover-plate under load is placed in 8o compression, as are also the flanges 2,to which it is attached. y

Flanged plates or castings 10 are preferably arranged at the ends of the bolster opposite the column-gtiides, as shown in Figs. l and 2, for the purpose of stiening same, so that stresses may be transmitted from the side webs to the channel. These castings or plates 10 are riveted to the channel.

I am aware that many minor changes in the 9o construction, arrangement, and combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of :my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

l. A bolster comprising side web-plates, the upper edges of which terminate in laterallyroo projecting flanges, a cover-plate attached to said anges and resting thereon, a channel between the lower edges of the side webplates, said channel being provided with downwardly-projecting flanges riveted thereto and extending to the end ofthe bolster, and a brace connected thereto and tO the webplates above said channel; substantially as described.

2. Abolster comprising side web-plates pro- Avided with laterally-presented fiangesralong their upper edges, which anges terminate short of the ends thereof, a cover-plate attached to said flanges, and being coextensive in length therewith, and a channel between the lower edges of the side web-plates the flange thereof extending downwardly from the web portion thereof; substantially as described.

3. A box-girder bolster of variable depth, the same comprising side web-plates, laterally-presented flanges along one edge of each of said web-plates, a channel which is bent to conform to the contour of the opposite edges of said web-plates the web thereof lying above the line of said edges, and a center-bearing and side bearings carried by said bolster; substantially as described.

4. A bolster, consisting of web-plates of variable depth, the upper edges of said webplates terminating in laterally projecting flanges, a cover-plate forming a compression member riveted to said flanges, a channel whose flanges are presented downwardly and riveted to the lower edges of the web-plates, said channel being bent to follow the line of the lower edges of the web-plates, the ends of said channel lying in substantially the same horizontal plane, to provide springseats, and column-guides attached to the webplates; substantially as described.

5. Abolstercomprisingside web-plates provided with Outwardly-presentedxanges along their upper edges, a cover-plate attached to said flanges, a channel between the lower edges of the web-plates, and stifr'ening-braces l0 attached to the end of the web-plates and the ends of the channel; substantially as described.

6. A box-girder bolster having web-plates with lateral flanges, a cover-plate thereon projecting over said flanges, a tension member within the lower portion of the web-plates and having downwardly-projecting fianges connected tosaid web plates, all of said flanges extending outwardly from said bolster to permit connection thereof by means of a machine riveter; substantially as described.

7. A box-girder bolster comprising a compression member, tension member and webplates,whose tension member projects beyond the compression member, the projecting ends of the tension member providing spring-seats, and braces above said seats uniting the tension member and said web-plates; substantially as described.

8. A box-ginder bolster comprising a compression member, web plates with lateral flanges connected thereto, and a tension member between said web-plates, with flanges extending downwardly and all of saidflanges presented outwardly to permit the union thereof by means of a machine-riveter; substantially as described.

In testimony whereof I hereunto affix my signature, in the presence of two witnesses, this 12th day of August, 1901.

ALBERT PANOOAST.

Witnesses:

R. C. MOORE, GEO. O. KING. 

